Compression Check

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Offline hakcenter

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Re: Compression Check
« Reply #15 on: October 26, 2017, 09:39:29 PM »
So wow, this pump is freaking awesome. I will have to find out what gov springs he put in, cause they are an absolute dream. I have full control idle to 4k anything in between. No super sensitive pedal.. nada

Still got that white haze smoke though, I dunno what to do. It certainly smells better since the pump though.

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Offline Rx7man

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Re: Compression Check
« Reply #16 on: October 29, 2017, 08:18:19 AM »
I should get my pump benched at some point.. I know one cylinder is off balance by a bit, you can hear it at idle
'94 dodge, Colt Cam, head worked, NV5600, 3.55's, SB clutch, Ford manual hubs w. hawk brakes, custom flatdeck, custom aluminum bumper, cab off restoration, totally new engine, Mahle pistons @19:1..HE351VE with 67mm turbine and 67x95mm compressor
440hp/1000 ft lb @ 2400 RPM

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Offline hakcenter

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Re: Compression Check
« Reply #17 on: October 29, 2017, 09:52:17 AM »
I used to have a strange injector rattle at idle. Used to be every 3rd rotation. Completely gone now... Truck drives like a beast. I need to find out what gov spring set he used

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Offline Rx7man

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Re: Compression Check
« Reply #18 on: October 29, 2017, 10:16:54 AM »
I've used the BD 3K set and the pacBrake  in 3k and 4K configurations, known to be a PITA and I've just never had a problem.. Stock springs were positively miserable, the truck would buck like a bronc at low revs
'94 dodge, Colt Cam, head worked, NV5600, 3.55's, SB clutch, Ford manual hubs w. hawk brakes, custom flatdeck, custom aluminum bumper, cab off restoration, totally new engine, Mahle pistons @19:1..HE351VE with 67mm turbine and 67x95mm compressor
440hp/1000 ft lb @ 2400 RPM

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Offline hakcenter

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Re: Compression Check
« Reply #19 on: October 30, 2017, 08:00:16 PM »
My govs were so messed up that when I went from 4k to 3k (must removing the small spring) my truck couldn't even start on it's own yet it idled the same rpm so tension was right /shrug

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Offline hakcenter

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Re: Compression Check
« Reply #20 on: December 14, 2017, 06:03:52 PM »
I finally decided to just give up and tear the sum bitch down. Head has some cracks at the exhaust valves, cylinder 4 lost it's valve seal, and the spring that holds it on.
Found 1 piece in the lifter tappet area, and the other directly under the seal /lucky

Time for a full rebuild, pistons look god awful anyways. So much blow by between the compression rings.

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Offline Rx7man

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Re: Compression Check
« Reply #21 on: December 15, 2017, 01:57:39 AM »
My truck started to get a bit of blowby on my trip.. not terrible, and I had a good load on, but it kinda felt like the power was a little bit soft.. wondering if I have a broken ring or something.  First things first is that F(&(&ing Cummins head gasket is leaking under #6 externally, perhaps there's something internal happening as well and that's where the blowby is coming from?  Gonna have to do a compression check on it I guess.. have to buy a tester, pull the injectors.. AGAIN, then pull the head and see what things look like... I'm never using a Cummins gasket again after 2 in a row that fail within 60,000 miles and the first one taking the engine with it.
Joy joy.. Once I get all the toys I bought off the truck I'll take another spin with it and see if it's actually down on power or if it was the weight and my turbo tune wasn't aggressive enough

Oh yeah, on my trip I totally broke the drivers side engine mount.. who knows how.. right side mount had 2 bolt heads snapped off, 3rd one was loose, then my starter packed it in.
'94 dodge, Colt Cam, head worked, NV5600, 3.55's, SB clutch, Ford manual hubs w. hawk brakes, custom flatdeck, custom aluminum bumper, cab off restoration, totally new engine, Mahle pistons @19:1..HE351VE with 67mm turbine and 67x95mm compressor
440hp/1000 ft lb @ 2400 RPM